Describe the problem
When using Entities Graphics, the Standard shader can't be used as it isn't dots instancing compatible.
Describe the solution you'd like
Make the shaders in graphics tools Dots instancing compatible.
https://docs.unity3d.com/Packages/com.unity.entities.graphics@1.0/manual/dots-instancing-shader.html
Describe alternatives you've considered
Use a different shader.
Additional context